Hex with flange
Round head
Countersunk head
Raised countersunk head
Hex with collar
Round head with collar
Bugle head
GB/T 15856.4-2002
Hexagon flange head drilling screw with tapping screw thread
GB/T 15856.5-2002
Hexagon head self-drilling and tapping screws with collar
GB/T 15856.1-2002
Cross recessed pan head drilling screws with tapping screw thread-type H
GB/T 15856.1-2002
Cross recessed pan head drilling screws with tapping screw thread-type Z
GB/T 15856.2-2002
Cross recessed countersunk head drilling screws with tapping screw thread-type H
GB/T 15856.2-2002
Cross recessed countersunk head drilling screws with tapping screw thread-type Z
GB/T 15856.3-2002
Cross recessed raised countersunk head drilling screws with tapping screws thread-type H
GB/T 15856.3-2002
Cross recessed raised countersunk head drilling screws with tapping screws thread-type Z
GB/T 15856.1-1995
Cross recessed pan head drilling screws with tapping screw thread-type H
GB/T 15856.1-1995
Cross recessed pan head drilling screws with tapping screw thread-type Z
GB/T 15856.2-1995
Cross recessed countersunk head drilling screws with tapping screw thread-type H
GB/T 15856.2-1995
Cross recessed countersunk head drilling screws with tapping screw thread-type Z
GB/T 15856.3-1995
Cross recessed raised countersunk head drilling screws with tapping screws thread-type H
GB/T 15856.3-1995
Cross recessed raised countersunk head drilling screws with tapping screws thread-type Z
GB/T 15856.4-1995
Hexagon flange head drilling screw with tapping screw thread
GB/T 15856.5-2023
Hexagon washer head drilling screws with tapping screw thread
